When the “Super Administrator” parameter is activated to true and the password being reset, all other users will locked.
Set the parametersume.superadmin.activated = trueume.superadmin.password = a new password

Restart the Java Cluster...

Logon as sap* and new password, correct the problem. then revert the change made to the parameterume.superadmin.activated to false and Restart the Java Cluster.